Imaginary Picture of WASP-39 b

Display orbital revolution of WASP-39 b around the hoststar WASP-39
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Exoplanet Name : WASP-39 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.2700 (Rjup) 14.2354 (Rearth)
Mass (Mjup / Me): 0.2800 (Mjup) 89.0226 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0486 (AU) 0.0486 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0111
Orbital Period(Observed/Estimated) 4.06 (Days Obs.) 4.06 (Days Est.)
Surface Gravity (G Earth) 0.4393
Star Radiation at Atmospheric Boundary: 353633.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1088.4 (K)
Blackbody T 0.3(K) 1022.1 (K)
Blackbody T 0.7(K) 827.0 (K)
Tidally Locked Blackbody T 0.1(K) 1294.3 (K)
Tidally Locked Blackbody T 0.3(K) 1215.5 (K)
Size Class: Super-Jupiter-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : WASP-39
Alternate Name :
Star Distance(LY) : 750.2
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5400 (K)
Spectral type : G8
UV portion[%]: 6.4
Visible portion[%]: 42.4
IR portion[%]: 51.2
Metalicity : -0.1
Absolute Magnitude: 5.3
Apparent Magnitude: 12.1
Right Ascension(RA) 217.3250
Declination (DEC) -3.4444
Hubble Space Telescope Guide Star Catalog (GSC) ID 04980-00761
Discovered by
Discovery Paper - Authors "F. Faedi, S. C. C. Barros, D. R. Anderson, D. J. A. Brown, A. Collier Cameron et al."
Discovery Paper - Title WASP-39b: a highly inflated Saturn-mass planet orbiting a late G-type star_
Discovery Paper - Journal "A&A 531, A40 (2011)"
Discovery Paper - URL http://www.aanda.org/articles/aa/abs/2011/07/aa16671-11/aa16671-11.html
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=WASP-39+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/WASP-39%20b/
WASP-39 b
WASP-39 b

  • WASP-39 b is an exoplanet orbiting the star WASP-39, located about 750.2 light-years (230.0 pc) away from Solar System. Its discovery was publicly announced on 2011.
  • The host star WASP-39 has apparent magnitude of 12.1, with absolute magnitude of 5.3.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5400 with its spectral types of G8
  • In this planetary system, the extrasolar planet WASP-39 b orbits around the star WASP-39 every 4.1 days with its orbital distance of 0.05 AU ( 7270456.5 km)
  • (Projected orbit of WASP-39 b around its host star WASP-39)


  • The Star WASP-39 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.565 AU ( 84580192.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.782 AU ( 116911929.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.191 AU ( 178147907.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.752 AU ( 262152449.6 km)
  • Radiation at Planetary Boundary of WASP-39 b : 353633.49 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star WASP-39)



  • Kopparapu Recent Venus for Star WASP-39 distance : 0.599 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star WASP-39 distance : 0.759 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star WASP-39 distance : 0.733 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star WASP-39 distance : 0.804 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star WASP-39 distance : 1.355 AU
  • Kopparapu Outer Boundary for Early Mars for Star WASP-39 distance : 1.429 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star WASP-39)



  • Original Kopparapu Recent Venus for Star WASP-39 distance : 0.596 AU
  • Original Kopparapu Runaway Greenhouse for Star WASP-39 distance : 0.781 AU
  • Original Kopparapu Moist Greenhouse for Star WASP-39 distance : 0.788 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star WASP-39 distance : 1.378 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star WASP-39 distance : 1.433 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star WASP-39)



    (Position in Stellar Map of star WASP-39 and its Exoplanet WASP-39 b)



    (Zoomed position in Stellar Map of star WASP-39 and its Exoplanet WASP-39 b (zoom level 3))

    (Synthetic Spectrum of star WASP-39*)
    *Yamashiki YA et al. 2019 ApJ 881 114
    MUSCLES Paper I - France et al. 2016 ApJ 820 89
    MUSCLES Paper II- Youngblood et al. 2016 ApJ 824 101
    MUSCLES Paper III- Loyd et al. 2016 ApJ 824 102